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Fastest way to check if object is empty (3)
(version: 1)
You don't need to make add for loops in your test scenarios, the benchmark does it itself.
Comparing performance of:
object.keys() vs JSON.stringify() vs for let in
Created:
one year ago
by:
Guest
Go to the latest result
Tests:
object.keys()
var xxx = {} Object.keys(xxx) === 0
JSON.stringify()
var xxx = {} JSON.stringify(xxx) === "{}"
for let in
var xxx = {}; var isEmpty = true; for (let key in xxx) { isEmpty = false; break; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
object.keys()
JSON.stringify()
for let in
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Browser/OS:
Chrome 131 on Windows
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=578100" width="100%" height="500px"></iframe>
for let in
101.7M/s
object.keys()
77.7M/s
JSON.stringify()
22.7M/s
View exact numbers
Test name
Executions per second
✓
for let in
101,723,672 Ops/sec
object.keys()
77,749,976 Ops/sec
JSON.stringify()
22,727,492 Ops/sec
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Fastest way to check if object is empty using length 2
Fastest way to check if object is empty using length 3
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